After you have wiped down any excess debris on your stovetop with a rag, use your Dremel Rotary tool to begin removing tougher rust and build-up.
We used a Dremel 4000 tool with a 404 Nylon Bristle Brush to get the Job Done. Make sure to set your tool speed no higher than 15,000 RPMs. The Nylon Bristle Brush is nice for this application because it can aggressively remove buildup but will not damage your stovetop if used correctly.
As always, use a light touch and let the speed of the tool do the work to remove buildup. Once you have finished removing the bulk of the buildup, wipe clean with a rag.